LS6 Head Porting & RWHP help...
03-17-2003, 08:37 PM
#21
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Re: LS6 Head Porting & RWHP help... Stock 2001 241 castings flow 236 at .500" 243cfm at .600". Stock #243 LS6 castings did flow 276 cfm at .500" and 287cfm at .600" on my bench. Others like ARE have gotten very similar test results as mine. LS6 head maintains more flow with intake bolted on than LS1 heads. This accounts for some of the gains made with LS6 swaps. Ported or stock .
03-18-2003, 09:23 PM
#22
Re: LS6 Head Porting & RWHP help... </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by LS1derfull:
<strong> Stock 2001 241 castings flow 236 at .500" 243cfm at .600". Stock #243 LS6 castings did flow 276 cfm at .500" and 287cfm at .600" on my bench. Others like ARE have gotten very similar test results as mine. LS6 head maintains more flow with intake bolted on than LS1 heads. This accounts for some of the gains made with LS6 swaps. Ported or stock . </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">And what bench do you have...a SF 600?
Jim
<strong> Stock 2001 241 castings flow 236 at .500" 243cfm at .600". Stock #243 LS6 castings did flow 276 cfm at .500" and 287cfm at .600" on my bench. Others like ARE have gotten very similar test results as mine. LS6 head maintains more flow with intake bolted on than LS1 heads. This accounts for some of the gains made with LS6 swaps. Ported or stock . </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">And what bench do you have...a SF 600?
Jim
03-19-2003, 01:28 PM
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Re: LS6 Head Porting & RWHP help... ...the ported LS6 heads from SDPC are LESS expense not more expense than ported LS1 heads...
..they cost $980 per head from SDPC and do not require a core charge...they flow 315 at .550 lift
..they are new castings not old castings re-ported!
A NO BRAINER!
..they cost $980 per head from SDPC and do not require a core charge...they flow 315 at .550 lift
..they are new castings not old castings re-ported!
A NO BRAINER!
03-19-2003, 01:52 PM
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Re: LS6 Head Porting & RWHP help... <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> dayum
315 at .550 lift
Where did you get those numbers if you dont mind me asking?
315 at .550 lift
Where did you get those numbers if you dont mind me asking?
03-19-2003, 01:56 PM
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Re: LS6 Head Porting & RWHP help... </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by robertbartsch:
<strong> ...the ported LS6 heads from SDPC are LESS expense not more expense than ported LS1 heads...
..they cost $980 per head from SDPC and do not require a core charge...they flow 315 at .550 lift
..they are new castings not old castings re-ported!
A NO BRAINER! </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I just had a set of them flowed and they dont do any where near 315 at .550, as a matter of fact they don't do 315 anywhere. The peak # on the intake side was 289 and that was at .550 they go down hill quickly after that.
<small>[ March 19, 2003, 02:00 PM: Message edited by: KECHME ]</small>
<strong> ...the ported LS6 heads from SDPC are LESS expense not more expense than ported LS1 heads...
..they cost $980 per head from SDPC and do not require a core charge...they flow 315 at .550 lift
..they are new castings not old castings re-ported!
A NO BRAINER! </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I just had a set of them flowed and they dont do any where near 315 at .550, as a matter of fact they don't do 315 anywhere. The peak # on the intake side was 289 and that was at .550 they go down hill quickly after that.
<small>[ March 19, 2003, 02:00 PM: Message edited by: KECHME ]</small>
03-19-2003, 02:23 PM
#26
Re: LS6 Head Porting & RWHP help... </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by robertbartsch:
<strong> ...the ported LS6 heads from SDPC are LESS expense not more expense than ported LS1 heads...
..they cost $980 per head from SDPC and do not require a core charge...they flow 315 at .550 lift
..they are new castings not old castings re-ported!
A NO BRAINER! </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I don't know much...but I'll call <img border="0" alt="[bullshit]" title="" src="graemlins/gr_bs.gif" /> on that one. Something's way wrong with that number from what I've been seeing. <img border="0" title="" alt="[Frown]" src="gr_sad.gif" />
<strong> ...the ported LS6 heads from SDPC are LESS expense not more expense than ported LS1 heads...
..they cost $980 per head from SDPC and do not require a core charge...they flow 315 at .550 lift
..they are new castings not old castings re-ported!
A NO BRAINER! </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I don't know much...but I'll call <img border="0" alt="[bullshit]" title="" src="graemlins/gr_bs.gif" /> on that one. Something's way wrong with that number from what I've been seeing. <img border="0" title="" alt="[Frown]" src="gr_sad.gif" />
03-19-2003, 02:48 PM
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Re: LS6 Head Porting & RWHP help... each of the GMPP CNC ported by lingenfelter have a tag on them that tell you the flow at diff valve lifts i forget what the #'s were on the last set i sold but the cust is very happy with them just my .02
Jay
Jay
03-19-2003, 03:15 PM
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Re: LS6 Head Porting & RWHP help... </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Jay 95WS6:
<strong> each of the GMPP CNC ported by lingenfelter have a tag on them that tell you the flow at diff valve lifts i forget what the #'s were on the last set i sold but the cust is very happy with them just my .02
Jay </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I agree with you , they are super nice heads for the money. I just did'nt agree with the flow #'s being 315@.550 .
<strong> each of the GMPP CNC ported by lingenfelter have a tag on them that tell you the flow at diff valve lifts i forget what the #'s were on the last set i sold but the cust is very happy with them just my .02
Jay </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I agree with you , they are super nice heads for the money. I just did'nt agree with the flow #'s being 315@.550 .
03-19-2003, 03:26 PM
#29
Re: LS6 Head Porting & RWHP help... Jay, if you're right and they come with an honest to goodness flow sheet and I flow them here at my local shop and the #'s match I might be calling you or SDPC. If they don't make the numbers claimed will they take them back no questions asked?
Jim
Jim
03-19-2003, 04:16 PM
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Re: LS6 Head Porting & RWHP help... 315cfm at .550 is more like a flow number for a fully ported Stage II LS6 head from LG, MTI, Absolute Speed etc., not the CNC heads offered from Scoggin Dickey.
If those CNC heads flowed that well everyone would be buying them and the sponsors wouldn't be able to sell any of theirs.
If those CNC heads flowed that well everyone would be buying them and the sponsors wouldn't be able to sell any of theirs.
03-19-2003, 06:14 PM
#31
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Re: LS6 Head Porting & RWHP help... I agree with above post about 315cfm at .550" being stage 2 ported heads. JimmyZ my bench is a SF600. I think problem with SDPC LS^ CNC is too big a port volume(250cc) for the flow that they have. Mine flow better and my port is only 221cc finished.
03-19-2003, 07:22 PM
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Re: LS6 Head Porting & RWHP help... You got 326 from STOCK CASTINGS????
I've seen a ton of differences from flow bench to flow bench.. putting some clay around the ports to simulate an intake can result in close to 50 cfm!.. I had my stage III MTI heads flowed recently, on two identical benches. One with clay around the ports, one without. I got 289 on the without, and 335 with..
How are you guys testing? With or without something to simulate an intake????
326 from Stock Castings???? I WANT SOME OF THOSE!!!!!!!! JUST IMAGINE HOW THEY WOULD BE PORTED!!!!!!!!
I've seen a ton of differences from flow bench to flow bench.. putting some clay around the ports to simulate an intake can result in close to 50 cfm!.. I had my stage III MTI heads flowed recently, on two identical benches. One with clay around the ports, one without. I got 289 on the without, and 335 with..
How are you guys testing? With or without something to simulate an intake????
326 from Stock Castings???? I WANT SOME OF THOSE!!!!!!!! JUST IMAGINE HOW THEY WOULD BE PORTED!!!!!!!!
03-19-2003, 07:36 PM
#34
Re: LS6 Head Porting & RWHP help... </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Cammin BeaSSt:
<strong> My new LS6 castings just flowed 326 @ .550 <img border="0" title="" alt="[Razz]" src="gr_images/icons/tongue.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">STOCK???!!! What valves? What bench? IF they are stock (and I'm bettin' they're not) that's excellent. <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />
<strong> My new LS6 castings just flowed 326 @ .550 <img border="0" title="" alt="[Razz]" src="gr_images/icons/tongue.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">STOCK???!!! What valves? What bench? IF they are stock (and I'm bettin' they're not) that's excellent. <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />
03-19-2003, 09:43 PM
#36
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Re: LS6 Head Porting & RWHP help... The flow results that really matter are the ones with intake manifold bolted up to ported head. This is indicative of the flow motor can expect to see. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
